A Rare Rock Crystal Globe Clock. Rock crystal with cut stars, silver gilt, multi-coloured enamels on the hinge. The inside is also enamelled with a corresponding dial, blue Breguet steel hands, gilt verge movement. Very beautiful condition with the movement in tact. The ‘Vienna Egg’ is one of the rarest Vienna rock crystal form clocks. This of course has makers’ marks for Herman Bohm. Provenance: Private Collection, London.